#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>

int main()
{
	int a = 10;
	int b = 11;
	int c = 0;
	c = a ^ b;
	int i = 0;
	int count = 0;
	for (i = 0; i < 32; i++)
	{
		if (c & 1 == 1)
		{
			count++;
		}
		c >>= 1;
	}
	printf("%d\n", count);
	return 0;
}